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kherson [118]
3 years ago
5

Factorise fully the following:a) x² + 2xb) 2x² - 6xc) 15x - 10x³d) 9x² + 3x³​

Mathematics
1 answer:
Lostsunrise [7]3 years ago
6 0

Answer:

a) x(x+2)

b) 2x(x-3)

c) 5x(3-2x^2)

d) 3x^2(3+x)

Step-by-step explanation:

a) x^2+2x

When factoring a binomial (a polynomial with two terms), what we will be looking for are the terms that are shared between them.

In this problem, it can be seen that both of these terms have and x. This means that we can factor it out to get

x(x+2)

b) 2x^2-6x

What are the common terms here?

It can be seen that each of these share a 2x, so our factored form would be

2x(x-3)

c) 15x-10x^3

What about this one?

The common factor of this one is 5x, so our factored form would be

5x(3-2x^2)

d) 9x^2+3x^3

The common factor of this one is 3x^2, so our factored form would be

3x^2(3+x)

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anastassius [24]
You're solving for w for I assume.

P= -3w+9, put -3w on the left side and P on the right side.
3w= -P+9, divide both sides by 3.
w= -P+9 over 3.
w= -P over 3 plus  9 over 3.
(Final Answer):
w= -p over 3 plus 3.

Hope this helps. 
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2 years ago
The final cost of a sale item is determined by multiplying the price on the tag by 75%. Which best describes the function that r
Lelechka [254]

Answer:

Option A) is correct.

Step-by-step explanation:

The final cost of a sale item is determined by multiplying the price on the tag by 75%.

So. if the final cost is represented by $F and the price on the tag is $t, then the relation between  F and t will be  

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3 years ago
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Alex787 [66]

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Step-by-step explanation:

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2 years ago
Look at the image for the problem :)
8_murik_8 [283]

Answer:

\displaystyle V = 28 \pi \ ft^3

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Geometry</u>

Volume of a Cylinder Formula: \displaystyle V = \pi r^2h

  • V is volume
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  • h is height

Step-by-step explanation:

<u>Step 1: Define</u>

Radius <em>r</em> = 2 ft

Height <em>h</em> = 7 ft

<u>Step 2: Solve for V</u>

  1. Substitute in variables [Volume of a Cylinder Formula]:                                \displaystyle V = \pi (2 \ ft)^2(7 \ ft)
  2. [Volume] Evaluate exponents:                                                                         \displaystyle V = \pi (4 \ ft^2)(7 \ ft)
  3. [Volume] Multiply:                                                                                             \displaystyle V = 28 \pi \ ft^3
5 0
3 years ago
Actual
Katena32 [7]

Answer:

Step-by-step explanation:

so first you multiply how much she jogged then put the in infront of the number

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